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Table 3: Proposed Detached Two-Family "House Type"
Assignments and Resulting Change in Nonconformity as of 11/1/20
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Approximately 10% of Newton's Two-Family Homes
are side-by-side units with separate entrances, termed "Family
Duplex" by the Assessors. This construction is no longer specified
by the Planning Department as a two-family, but (possibly) as a
"Townhouse Section" that is only allowed in the new N district.
Newtonrezoning.org is calling this type
"NoSpec:FD," and
giving it an allowed footprint of 2 X the townhouse section footprint in the
nonconformity analysis. Traditional Two-Families have been defined as a
"Duplex" Type by Planning, "with one unit
above and one below, or the second floor is split between the two units as in
the case of a 'Philadelphia-style' duplex."
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House Type Assignment [1]
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Duplex
[Two Vertical Units]
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NpSpec:FD
[Two Side-by-Side Units]
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All
Two-Families
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Story Number Limit for House Type
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2.5
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3
Assumed
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Footprint Limit for House Type in sq. ft.
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1,800
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3,000
Assumed
2 Townhouse sections
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Districts where House Type is allowed by right
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R3,R4,N
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N
Assumed
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Number of Homes in R1,R2
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297
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23
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320
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Number of Homes in R3,R4,N
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1,989
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254
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2,243
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Total Number of Homes
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2,286
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277
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2,563
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Ave Lot Size Sq. Ft.
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8,304
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9,097
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8,389
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Ave Living Area Size Sq.
Ft.
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2,809
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2,766
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2,804
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% Homes nonconforming with CURRENT side/rear setbacks
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64.0%
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56.0%
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63.1%
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% Homes nonconforming with PROPOSED Side/Rear Setbacks
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80.3%
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74.0%
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79.6%
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% Homes nonconforming with footprint and story height limit
defined by house type
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36.7%
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0.7%
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32.9%
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% Homes nonconforming for being outside allowed district for
House Type [2]
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13.0%
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97.8%
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22.2%
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% Homes nonconforming with PROPOSED story height, footprint,
district, and side/ rear setbacks.
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89.7%
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98.2%
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90.6%
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Data
Exclusions: Estimate of Two-Family Houses = 2,722. Data was excluded if
houses were not in a Residential District in current and proposed zoning.
This eliminated 159 houses, leaving a sample size of 2,563 two-family family
homes.
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[1] Zoning Specs. from 8/7/20 Planning Department
memo. Sasaki Measurements and proposed districts from 2019 Build-Out
Analysis.
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[2] This analysis assumes that all
"NoSPEC:FD" [Side-by-side two-familys] are now zoned as two
townhouse sections where each townhouse section has an allowed footprint of
1,500 sq. ft.
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